Shaft-coupling.



No. 705,366. Patented luly,22, I902.

l. LEHMAN.

SHAFT COUPLING.

(Application filed Dec. 80, 1901.)

I (No Model.)

W/ TNE SSE S IN VE N 70/? I 21 on I7 ,7 22 mum UNITED STATES P TENTOFFICE.

ISADOR LEHMAN, OF CLEVELAND, OHIO.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 705,36 6, dated Ju22,1902.

Application filed December 30, 1901. Serial No. 87,849. (No model.)

shaft-couplings suitable for-use in'coupling two shaft-sections togethervwithout interfering with the rotationof the said shaft-sections inunison and with their-arrangement at an angle to each other.

a modification of the type of shaft-coupling embodied and disclosed inUnited States Letters Patent No. 676,194, granted to me June The objectof this invention is to construct a shaft-coupling of the characterindicated which possesses great strength and durability, I

which isoreliable in its operation, and whose component partsare'conveniently assembled and separated.

With this obj eet in View my invention consists in certain features ofconstruction and combinations of parts hereinafter described, andpointed out'iu the claims. In the accompanying drawings, Figure I is aside View of a shaft-coupling embodying my invention. .Fig. II is anelevation largely in central longitudinal section on line II II, Fig. I.Fig. III is a central, transverse section on line III III, Fig. II,looking in the direction indicated bythe arrow. Fig; IV'is an elevationlargely in central longitudinal sec tion on line IV IV, Fig. II. p

Referring to the drawings, a and?) designate two shaft-sections coupledtogether by thechamberof the shell-c hastwowalls 20 and 21, arranged inplanes at right angles to each other and extending concentrically of thechamber of the said shell.' The shell cis slotted, asat22,1ohgitudinally of each of the said walls 20 and'2l, centrally betweenthe ends of the walls. The shaft-section a extends through the slot 22in the wall 20, and

the shaft-section 1) extends through the slot- 22 in the wall 21, andeach of the shaft-sections has its head 15 provided with a shoulder 16,engaging-the slotted wall through which the said shaft-section extends,which shoulder 16 extends widthwise of the said wall the full width ofthe wall, and conset j quently the shell 0 has bearing upon the Thisinvention pertains more esp'eciallyto gages the wall 13 of the recess orcavity 14 in the head 15 of the shaft-section a, so as to accommodatenot only the movement or adjust- I ment of the shaft-section ctcircumferentially of the ball-shaped inner end of the shaft-section I),but so as to accommodate also the adjustment of the shaft-section b atvarious anglesto the shaft-section a. The shoulder 16 of the head of'each shaft-section and the slot :22, through which the saidshaft-section extends, extend around and concentrically of the center ofthe shell 0 a distance equal to about one-third or somewhat less thanone half the distance around the said shell. The slotted Walls 20 and 21extend about threefourths of the distance around the center of the saidshell 0, and, in fact,'e ach of the slotted walls 20 and 21 extends'froma point near one side of the other slotted wall concentrically of thecenter of the shell 0 to near the opposite side of the last-mentionedslotted wall. The portions of the walls 20 and 21 at the sides of theslots 22 have adequate bearing at all times upon the shoulders 16 of theheads 15 of the shaft-sections and are instru- ICC mental in preventingdisplacement of the parts.

The shell 0 is provided internally at each side of each slotted wall ofthe said shell with a shoulder 19, extending along the said wall, andthe two shoulders 19 and 19, extending along the said wall, are arrangedat and a short distance from opposite sides, respectively, of the slot22 in the said wall at and contiguous to opposite sides, respectively,of the head 15 of the shaft-section extending through the said slot andare instrumental in establishing operative connection between the shell0 and the said shaft-section.

Obviously by the construction hereinbefore described the twoshaft-sections and the shell 0 will rotate in unison upon applying powerto one of the said shaft-sections, and each shaft-section can bearranged at an angle to the other shaft-section, and when theshaftsections are arranged at an angle to each other the shell 0 will,during the operation of the parts, not only rotate, but rock oroscillate upon the shoulders 16 of the heads 15 of the shaft-sections.

The shell 0 is divided, as at 25, into halves -or sections centrally andlongitudinally of one of the slots 22 of the said shell to accommodatethe assemblage of the parts. The said halves or sections correspond inconstruction and are consequently interchangeable. Each shell-section isprovided at one side of the shell and externally with a pair ofinternally-screw-threaded registering ears 12, arranged a suitabledistance apart, and at and externally of the opposite side of the shellhas a correspondingly internally threaded single car 10, which extendsbetween and registers with the two cars of the pair of cars of the othershell-section. A correspondinglythreaded screw (1 is screwed into theregistering ears 10 and 12 at each side of the coupling, and ascrew-threaded hole 7 is formed partially in the said screw (1 andpartially in one of the said cars 12 and engaged by a screw (2, whichprevents unscrewing of the said screw (1.

What I claim is 1. The combination, of a casing or shell 0 made insections and having two internal walls 20 and 21 arranged in differentplanes, respectively, at right angles to each other and extendingpartially around the center of the said shell, which shell is provided,in each of the said walls, with a slot 22 extending along the wall;means for holding the sections of the shell or casing together, and twoshaftsections extending through the slot 22 in the different aforesaidwalls, respectively, and provided, respectively, with a head 15contained within the aforesaid shell, and a shoulder 16 extending alongand afiording bearing for the wall through which the respectiveshaft-section extends, and the head of one of the shaft sections havingits inner end shaped as required to form the segment of a ball whosecenter is coincident with the center of the aforesaid shell, and thehead of the other shaft-section having a cavity or recess let open atthe sides of the head and having its wall 13 arranged concentrically ofthe center of the shell and engaged by the aforesaid segment of a ball,substantially as and for the purpose set forth.

2. The combination,with two shaft-sections a and I) having theiradjacent ends provided with heads 15, of a casing or shell 0 embracingand having bearing upon the said heads and establishing operativeconnection between the said shaft-sections and composed of two halves orsections, and each half or section having a pair of registering cars 12at one side of the shell and a single ear 10 at the opposite side of theshell with the last mentioned ear of the said half or section interposedbetween and registering with the ears of the pair of ears of the otherhalf or section, and means for securing the registering ears together.

3. The combination,with twoshaft-sections a and I) having their adjacentends provided with heads 15, of a casing or shell 0 embracing and havingbearing upon the said heads and establishing operative connectionbetween the said shaft-sections and composed of two halves or sections,and each shell-section having a pair of registeringinternallyscrew-threaded ears 12 at one side of the shell and a singleinternally-threaded ear at the opposite side of the shell, with thelast-mentioned ear of the said shell-section interposed between andregistering with the ears of the pair of cars of the othershell-section, a screw extending into and engaging the registering earsof the shell-sections at each side of the shell, and another screwengaging a correspondingly-threaded hole formed partially in thefirst-mentioned screw and partially in one of the ears engaged by thesaid first-mentioned screw, substantially as and for the purpose setforth. 7

In testimony whereof I sign the foregoing specification, in the presenceof two witnesses, this 23d day of December, 1901, at Cleveland, Ohio.

ISADOR LEl-lMAN.

Witnesses:

C. H. DORER, TELSA SCHWARTZ.

